Bone resector



F. E. MILLE R BONE RESECTOR.

. APPLICATION FILED APR.24, I918- RENEWED DEC. 22,1921. 1,423,866.

Patented July'25, 22.

INVEIVTOR.

YgQ ORNE Y ire. srerss amine MILLER, or YORK, n. Y.-

' sons Resection.

Specification of Letters Patent.

Patented July 25, 19 22.

Application filed April 24, ieiaseriai in. '23o;421. RenWedDecemberQQ,1921. Serial 52412925.

To(ZZZ10720721712?maycmwem:

Be it known that I, FRANK "E. MILLER, a citizen of the United States,and a resident of New York city, county 3 and State of New York, haveinvented a certain new and useful Bone Resect'or, set forth in thefollowing specification;

This invention relates to surgical instruments. The object of theinvention is to produce a resecto'r suitable for the correction ofseptal deviation without resort to any cutting and removal either of thebony structure or of the mucous covering.

I have found from my experience and observation that, in a largemeasure, the many operations on the septum that are being practiced,deform the nose and destroy acoustical balance and many times create adry, catarrhal condition besides from malposition forming adhesions.

The instrument which I have produced is serviceable in severing a warpedor malformed septum, so far as its bony structure is concerned, butwithout injuring the mucous covering.

In carrying out my desired construction I propose to provide a pair ofbluntedged operating wedge-shaped members constrained to move inslightly separated parallel planes and combined with means whereby apowerful shearing action may be imparted to the said members.

The above will better be understood by reference to the followingspecification, which describes an illustrative embodiment shown merelyfor purposes of illustration in the accompanying drawings, which form apart hereof, in which like characters designate corresponding parts inthe several figures, and in which Figure 1 is a perspective View of mycomplete resector;

Figure 2 is a front elevation of the same;

Figure 3 is a side view taken along the line III-+111 of Figure 2;

Figure 4. is a horizontal section through line IVIV of Figure 2; and

Figure 5 is a horizontal section drawn to double size along line V-V ofFigure 3.

A pair of symmetrical operating members 1 and 2 are formed preferablywedgeshaped and of substantially triangular cross section, as shown bestin Figure 5. Geometrically, the may be described as triangular prisms.he blunt operating edges are indicated by a and it should be noted thatthe contiguous faces '5 are parallel and should be laterally separatedpreferably approximately 7 of an inch. V

The members 1 etude are operated by a pair of necks 3 and 4:respectivelymechanically connected to the members 1' 2 and preferablyforming integral outer extensions thereof. The-neeks'g and 4. should bebowed, as indicated best in Figure 1, to escape and clear the partsofthe nasal "structure which do not require operation.

The necks 3 and 4: continuerespectively i'nto manually operable handles'ti'and '6 of the forceps type. Between the neck 3 proper and the handle'5 proper substantially onehalf of the metal is cut away to fans thepivoting ledge c, the plane of which is par allel to and intermediatethe faces Z) of the operating members 1 and 2. Likewise the metal of theneck and arm structure 4 is cut away to form the pivoting ledge (l. Theshank e is provided with a keyhole slot 7 to take the locking pivotingpin g, mounted to upstand from the ledge c of shank h. It is obviousthat the two parts of the resector may be disconnected by bringing thetwo parts substantially at right angles to one another so that the headof the pin 9 can pass through the slot f.

In as much as it is highly essential in this instrument that a trueparallel movement between the operating members 1 and 2 be effectedwithout any variation, even when considerable force is being exerted inthe lateral separation between the faces 6, it is preferred to provideguiding means in addition to the ledges c and (Z and the slot and pin 7and 7. It is also an objective to accomplish this supplemental guidingwithout weakening the structure. To this end I cut a slot 2' in theshank end of the handle 6, preferably so that one wall j of this slot isin the same plane as the ledge d. The other wall 76 of this slot isparallel to the wall 1' and separated therefrom an amount sufficient tosnugly engage the parallel side walls of the tongue Z projecting outfrom the shank end of the handle 5. The outer edge 7 of this tongueshould be cut arcuate about the axis of the pin 9 as its axis. Thecorresponding face of the slot 2' may have similar arcuate contour.

It should be noted that the entire structure of my resector, so far asits pivoting is concerned, is of the scissors genus,-that is, theoperatlng blades are respectively on the same side of the median planeas are the sliding pivoting ledges.

What I claim and What I desire to secure by United States Letters Patentis l. A bone resector comprising, a pair of dull operating blades; apair of relatively pivotable necks respectively mounting said blades sothat said blades are guided into and out of approximate juxtapositionwith constant lateral separation; and a pair of ing the operativemovement of said members.

4. A resector comprising a pair of relatively cooperating shearingcrushers having longitudinal blunt operating edges; and means foreffecting a relative operating movement of said crushers in separatedparallel planes from open position, in which the part to be crushed maybe engaged by a longitudinal or endwise engaging movement of theresector to closed position, in which said crushers are approximatelyjuxtaposed.

5. A surgical instrument comprising a pair of handles and operatingmembers arranged like a pair of scissors With the operating parts onopposite sides of the swivelling plane, said operating parts comprisinglongitudinal blunt edged shearing members permanently laterally spaced;and guiding means comprising a tongue formed on one handle and a matingslot on the other handle.

In testimony whereof I have signed my name to this specification, this25th day of March, 1918.

FRANK E. MILLER.

